Solved Inventory saving/restoring

Hey there everyone, so I had a quick question Im sure its pretty simple cause its already been created.

I was wondering if someone would be able to make a Inventory save plugin to where I ran a simple command, for example, "/saveall"

I would use this before and after wipes.

Some features that I'd like to have is of course is to be able to save everyones inventorys, then when the server wipes and they come back and it says there dead. After they respawn it gives them back there saved items from when a admin ran the command /saveall before wipe.